<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <script>
    // document 对象 -> 整个文档
    console.log(document.body)

    var obj = { name: 'why', age: 18, body: document.querySelector('body') }
    console.log(obj.name, obj.age, obj.body)
    cumsemenclub

  </script>
</body>

</html>